8d. Presentation
Contract for Concourse N Hazard Mitigation
Item No. 8d_supp Date of Meeting May 10, 2022 C800556 NSAT Modernization Concourse N Arc Flash Mitigation Purpose & Scope Purpose: Supply and install the following equipment and monitoring system for arc flash mitigation at the south main power center in the concourse: Project Scope: Two (2) new appropriately rated arc flash circuit breakers The modifications to the switchgear to accept the 2 new circuit breakers Two (2) circuit breaker relays for primary breaker protection Two (2) control power transformers Two (2) sets of 3 current transformers for power monitoring Perform commissioning of the switchgear to validate the arc flash incident levels desired are achieved 2 North Satellite Arc Flash Mitigation 3 Schedule CIP: C800556 Key Schedule Milestones: Design Start: Q2 2021 Construction Start: Q3 2022 In-Use Date: Q4 2022 4 Risks and Mitigation Risk: Safety Mitigation: Ensuring the proper breakers are installed to mitigate the arc flash levels Risk: Schedule Mitigation: Maintaining the construction schedule to promote safety 5 Action Requested Request Commission authorization for the Executive Director to (1) Use Port of Seattle crews, as well as small and major works on-call contracts to perform the construction work and; (2) advertise and execute a major on-call construction contract for hazard mitigation in the south power center of Concourse N The total estimated project cost is $1,000,000 This work is being completed as part of the original North Satellite Modernization at Concourse N project. 6
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